Here is a photo of one of our complete NOS smog systems rebuilt and ready to go. This system is for a 1968 Z/28. It comes with the following: restored original white fan pump dated to match your car, NOS DH diverter valve, "522" deep groove pulley w/ "RBW" mounting bolts, smog tubes plated correct black zinc finish, pump mounting bracket and adjusting brace, NOS "992" check valves, dated original hose clamps, GM stamped hoses, and vacuum "T". All NOS systems that we sell are sold complete as shown here.

Rear view close up of the NOS diverter valve mounted to the smog pump

Here is a close up of our NOS "992" check valves.

Restored original white fan pump w/ NOS DH diverter valve

Note the pump stamping date, 15781Y, decodes as the 157th day of 1968, with a Saginaw plant code of 1Y. In the case of 1968 pumps, original pumps have been found with this julian stamping on the machined flange shown here or right next to the machined flange as shown here in our photo.

Close up showing the original restored "RBW" pulley mounting bolts.

Close up showing the original dated hose clamps. If plating is poor on these original clamps, we replate them to a factory fresh silver cad finish.

Below are three photos of our NOS rebuilt 1969 Z/28 smog system.

Here is a complete smog system for a 1969 Z/28

Clamps are dated 2nd quarter of 1969.

This original white fan pump date is the 248th day of 1969.

Here is one of our restored NOS smog systems for a 1970 396 or 454. It's complete and ready to install.

Close up shot of original dated hose clamps that we supply with every system.

Close up shot of the white fan pump, note the date of 16101S. Decodes to the 161st day of 1970. All pump housings are restored with our famous reskinning process and look brand new!

We can build your NOS smog system either functional or non-functional. There is no extra charge doing it either way. There are several advantages letting us build your system non-functional and we'll explain why:

#1. Gutting the smog pump and building it non-functional is the better way to go because there are no back firing issues when letting off the gas. Any time you let off the gas while driving your car you will experience back firing and popping. This was due to the smog pump and diverter valve pushing air through the system. There are documented cases of this backing firing destroying the exhaust system muffler. When gutting the drum in the pump assembly, your system will run quietly and look like it's functioning fine.

#2. Smog tube plating, as we know, original smog tubes were plated in a black zinc finish. When running a functioning system, the 1200 degree exhaust temperatures exit through the tubes. Within a years time, the heat will take it's toll on the black zinc plating destroying most of the factory finish. If we build the system non-functional, the tubes are plugged not allowing exhaust flow into the tubes preserving the plated finish.

#3. Exhaust flow, by letting us build your system non-functional, the exhaust port tube extensions are not needed. This will allow the exhaust to exit the cylinder head port without flow disruption increasing the horsepower in your engine.

So as you can see, there are several advantages to letting us build your system non-functional. All systems on our own personal cars are non-functional too. And remember, Camaro Hi-Performance is your best choice for that NOS smog system you need for that Z/28, 327, 350, 396 or 454!

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